255 pistons in inline 6 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 06-04-2010, 07:56 PM
Registered User
 
Last photo:
Join Date: Feb 2004
Location: puerto rico
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
255 pistons in inline 6

nyone know where i can find an affordable forged piston set. under 400 bucks? for a 3.68 bore.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 06-04-2010, 08:12 PM
Member
 
Last wiki edit: Ford axle ratio codes
Last journal entry: Rear Suspension
Last photo:
Join Date: Aug 2005
Location: Prattsville
Posts: 6,353
Wiki Edits: 31

Thanks: 2
Thanked 53 Times in 49 Posts
255 pistons fit the 250 I6 bore and not the 200 I6 bore.. what your looking for is 2.3 HSC OHV pistons.. JE makes forged 200 pistons but there $600 IIRC
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-04-2010, 08:40 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
The 200ci and 250ci Ford inline 6 both have 3.68" cylinder bores. The 200 has a 3.13" stroke, while the 250ci engine has a 3.91" stroke.

I see another thread asking about 200 ci rockers- are you building two different Ford inline 6's, is this a typo or are you putting a 200 head on a 250, or what?

EDIT- According to the info the pin heights are same.

Last edited by cobalt327; 06-04-2010 at 09:51 PM.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 06-04-2010, 08:47 PM
Member
 
Last wiki edit: Ford axle ratio codes
Last journal entry: Rear Suspension
Last photo:
Join Date: Aug 2005
Location: Prattsville
Posts: 6,353
Wiki Edits: 31

Thanks: 2
Thanked 53 Times in 49 Posts
yes. the deck height on a 250 is just about an inch taller. 10. somthing vs 9. somthing.. the 255 pistons do not fit the 200. I mis-spoke and said bore, but I'v been away from the small 6's for a few years... 250 and 200 heads use the same casting, with the exception of the 1971 High compression 250 head, which was not used on a 200, but swaps out anyway
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 06-04-2010, 09:17 PM
Registered User
 
Last photo:
Join Date: Feb 2004
Location: puerto rico
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
no but i have run across a 4.6l modular big bore forged piston.
3.7 bore.
.866 pin
1.22 c/d

i CANNOT SEEM TO MAKE THE MATH OUT RIGHT FOR THE 200 INLINE SIX THOUGH. AM AM FUSTRATED
the inline si i have has a
3.68 std bore
4.715 rod length.
3.126 stroke.
now here is all the info i copy pasted from classic inline I hope Mike doesnt get mad i used it.
Sizes and Dimensions
CI
Stroke
Bore
Size
Bore Spacing
Main Diameter
Rod
Diameter
Rod
Length
Centerline to Deck
Piston Pin
Height
144
2.500
3.5
?
2.2486
2.1236
4.855
?
?
170
2.940
3.5
?
2.2486
2.1236
4.715
?
?
200
3.126
3.68
4.08
2.2486
2.1236
4.715
7.808
1.511
250
3.910
3.68
4.08
2.3986
2.1236
5.880
9.469
1.511
221
3.460
3.68
4.08
2.3986
2.1236
5.130
?
1.511

i cant seem to make the math work out right to find out what rod length i would have to have to make the pistons work. im just eliminating items here so beer with me. With all being said to use the pistons for the 4.6 id have to use a 5.659 rod length. and the question here is where ********* lmao am i gonna find the rod??
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 06-05-2010, 07:06 PM
Registered User
 
Last photo:
Join Date: Feb 2004
Location: puerto rico
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
hello again i have found my match for some forged pistons.
a subaru wrx Wiseco piston. K588M925 this one is for .020. but for my needs a .040 would work for a slightly honed stock bore on my 3.68 bore.
These pistons .040 measure 3.681
Bore Size: 92.5mm (.020" overbore)
Piston Specifications:
- Stroke: 2.952"(75mm)
- Rod Length: 5.137 (130.50mm)
- Compression Height: 1.286 (32.66mm)
- Head cc's: 48
- Dome Dish: -9
- Gasket Thickness: .054" (1.37mm)
- Deck Clearance: 0.014" (0.35mm)
- Block Height: 7.913: (201mm)
- Compression Ratio: 8.35:1
- Pin Diameter: .9055" (23mm)

i Can use a 221 rod which is 5.13 in length.
only one problem tough. the deck height from crank centerline for these pistons in 1/10 of an inch taller than mine. what could i do here?

Bare with me on this speculation i love to build engines.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
identifying pistons?? 2wld4u Engine 12 01-15-2009 10:29 AM
need help with blower pistons malibu68 Engine 3 01-19-2007 10:32 PM
Blower pistons malibu68 Engine 15 12-14-2006 08:49 PM
pistons jerry1 Engine 5 12-14-2006 10:19 AM
pistons that kiss valves bullheimer Engine 16 06-16-2004 01:41 PM


All times are GMT -6. The time now is 09:05 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.